Code By AI
One API key for Claude, Codex, and Gemini, billed by token, with prices the official website states are roughly 1/6 of the official API.
About Code By AI
Code By AI is an API aggregation service for AI coding models: with just one API key and one balance, users can use the Claude, GPT, and Gemini model families in terminal agents such as Claude Code, Codex CLI, and Gemini CLI, as well as in desktop IDEs. All three channels share a single base URL, so switching models does not require changing tools. Billing is prepaid by token top-up; the official website states the rates are roughly 1/6 of the official API full prices (about 1/7.5 for Claude Code and Codex, and about 1/10 for Gemini), with no subscription and no minimum spend, and the balance is deducted by usage without resetting at the end of the month. Registration requires no card binding, but using the API requires topping up first. The website also provides configuration documentation for multiple agents, including Claude Code, Codex, Gemini CLI, Cline, Trae, and Qwen Code.
Best for
Best use cases
Switching between models from different vendors in terminal agents such as Claude Code, Codex CLI, and Gemini CLI
Accessing multiple model families through a unified endpoint in desktop IDEs
Workloads with fluctuating usage where you prefer to pay by actual token consumption rather than a fixed subscription
Compare before choosing
According to the official pricing comparison page: subscription plans charge a fixed monthly fee for capped usage, and once the cap is reached you can no longer use the service, with unused quota not carried over; vendor official APIs bill at full token prices with no cap but higher costs under heavy use; Code By AI bills by token with no monthly commitment
According to the official pricing page: for an example workload of 20 million input tokens and 2 million output tokens per month, gpt-5.6-terra costs $80.00 at the official full price versus $10.67 with Code By AI, a saving of 87%
Features
One key for three model families
One key and one balance cover Claude, GPT, and Gemini, with no need to register with three providers or bind three payment methods.
Unified access endpoint
Claude, GPT, and Gemini share a single base URL in terminal agents and desktop IDEs, so switching models does not require changing tools.
Token-based billing
Billed per million tokens, with rates printed on each model card; no subscription and no minimum spend.
Multi-agent setup documentation
Provides configuration guides for agents such as Claude Code, Codex, Gemini CLI, Cline, Trae, and Qwen Code.
Pros
- One API key and one balance give access to all three channels: Claude, GPT, and Gemini
- The official website states token-based billing at roughly 1/6 of the official API full prices, with no subscription and no minimum spend
- The balance is deducted by usage and does not reset at the end of the month
- Provides integration documentation for multiple agents, including Claude Code, Codex, Gemini CLI, Cline, Trae, and Qwen Code